hey guys got a question for anyone

I am getting this slight vibration in my floor board of my truck like I am going over a rumble strip or somthing but it is only when it is a cold start up after a while it goes away. my brother mentioned a u joint i got under there last night and was able it push on the u joint by the transfer case and got a little movement but not much. have already been to the dealer and they said that is was my tires, that they had flat spots on them, kinda got me questioning them.

any ways anyone out there had the same problem

thanks

 

There is a TSB for this issue, let me see if I can find it.

 

Here you go: http://ww2.justanswer.com/uploads/ke...sb05-14-04.pdf